Follow industry standards

In almost all cases, we recommend you switch to sending mail from your own domain. For mailing lists, also known as "listservs," you should change your sending behavior by adding the mailing lists’ address to the "From:" line, rather than the sender’s address. Also, enter the actual user/sender address into the "Reply-To:" line.

You can also change your email client's "send as" settings to use Yahoo SMTP servers. Consult with your third-party email client's help pages, or FAQs, for information on how to change these settings.

Our DMARC policy proactively protects our users from email spam that mimics Yahoo users’ email addresses from other mail servers. This helps secure our users’ email identities from being used by unauthorized senders. It also interferes with some long-standing uses of identities that are authorized by the user but not verifiable.

By publishing a “p=reject” record, Yahoo tells other DMARC compliant systems to reject mail from Yahoo users that isn’t genuinely originated from a Yahoo server. This affects only mail with Yahoo addresses on the From: line.

Want more info? Visit our Yahoo Mail Tumblr page to learn more about this policy change and what you can do to address sending issues to Yahoo Mail addresses.